12V 500mA AC-DC Linear Power Supply (2.1mm x 5.5mm) | PV-1250A
The PV-1250A is an industrial-grade linear AC-DC power supply delivering 12VDC at up to 500mA. It features a right-angle 2.1mm x 5.5mm barrel plug with center-positive polarity for low-noise applications.
This practical replacement adapter uses a right-angle plug and center-positive polarity, making it a tidy fit where the device label or manual calls for these exact electrical and connector specifications.
Technical Specifications
- Model: PV-1250A
- Input: 120VAC
- Output: 12VDC, 500mA maximum
- Connector: 2.1mm x 5.5mm barrel plug
- Plug style: Right-angle
- Polarity: Center-positive (+)
- Design: Linear AC-DC power supply
Common Applications
Use the PV-1250A for compatible small electronics, audio equipment, and other low-power devices when their specifications match every requirement below. It can be a useful replacement for a missing or worn adapter, but application examples are not blanket compatibility claims.
- Small electronics that specify 12VDC input
- Audio equipment such as compatible preamps, DACs, or headphone amplifiers
- Bench or replacement power needs for devices rated at 500mA or less
Compatibility and Limitations
Before ordering, verify all four points on the device label or manufacturer documentation: 12VDC input, 500mA maximum draw, a matching 2.1mm x 5.5mm barrel connection, and center-positive polarity. Do not use it with equipment that requires 12VAC, a different voltage, more than 500mA, a different connector size, or center-negative polarity. Also confirm that the equipment is intended for a 120VAC input source.
Frequently Asked Questions
What voltage and current does the PV-1250A provide?
It provides 12VDC with a maximum output of 500mA. The connected device should be rated for 12VDC and should draw no more than 500mA.
What connector and polarity does it use?
It uses a 2.1mm x 5.5mm right-angle barrel plug with center-positive polarity. Confirm the device's connector and polarity before connecting.
Can I use it with any 12V device?
No. A 12V label alone is not enough. The device must also match the DC output, 500mA limit, barrel connector dimensions, and center-positive polarity.
Is this a 12VAC power supply?
No. The output is 12VDC. Do not substitute it for equipment that specifically requires 12VAC.
